By taking advantage of the n 4 scaling factor, the quadratic Zeeman effect was measured for low magnetic fields in Rydberg states with principal quantum numbers n>100. The observed l-mixing is found to be in agreement with theoretical predictions.

Journal of Physics B Atomic and Molecular PhysicsJul 28, 19843 citations

European Quantum Electronics Conference (EQEC)

Zeeman effect for molecular rydberg states

V. E. Chernov, Dmitrii L. Dorofeev, B. A. Zon

Published Aug 24, 2005• 0 citations

Publisher

DOI: 10.1109/eqec.1994.698431

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Journal of Physics B Atomic and Molecular PhysicsJul 28, 19843 citations

We observe weakly-bound

Π

-symmetry electronic states in the spectroscopy of

^{87}

(nP_{3/2})

^{87}

Rb(

5S_{1/2}

) ultralong-range Rydberg molecules. We detect these molecules in Rydberg states having principal quantum number

13\le n \le 16

. Their

Π

-state character is unambiguously identified via their observed multiplet structure: the

2F+1

magnetic sublevels of the ground-state rubidium atom separate, as in the Zeeman effect, because of the spin-spin coupling between the Rydberg and valence electrons. We find a rapid decrease in the molecular binding energy

\propto (n-μ_{P_{3/2}})^{-11}

, where

μ_{P_{3/2}}

is the quantum defect, indicating that the low-

n

regime of Rydberg states is ideally suited for studies of

Π

-symmetry molecules. Our observations are in good agreement with Green's function-based calculations for

14\le n\le 16

, with poorer agreement for

n=13

hinting at the beginning of a breakdown of the Fermi pseudopotential approach at low

n